Also featured on our list of best HTC One cases, the HTC Dot View Case is a seriously thoughtful accessory. You don’t even need to unlock your phone to see your notifications, because the clever dot matrix design on the back of the case provides tap-to-activate weather updates, reminders, and more. This makes it ideal for professionals who are always on the go. It’s also great for students who don’t want to be out of touch, but want to avoid the temptation of checking their phone every five minutes. This case retails for around $50.

This handy little accessory from HTC is a great way to give your device an extra battery boost on those days when you just can’t get near a charger. While the HTC One M8 already has great battery-saving features, this little battery bar is still a great investment. You can get enough juice to charge two phones out of just one battery bar, and the bar works with other HTC phones as well. This accessory retails for around $60.

You’ll need to stay diligent about firmware updates in order to keep the device working

Device is small enough to lose easily, lacks a keyring or tether

4. Best HTC One (M8) Car Mount Accessory: HTC Car Kit

(HTC)

The HTC Car Kit retails for around $60. This kit includes a base, cradle, pad, and a charger. If you want to use your HTC One M8 for GPS navigation or as a mini in-car entertainment system for your kids, this is a great accessory to buy.

Tucker Cummingsis Heavy's Senior Shopping Editor. She's obsessed with finding the best deals, and firmly believes that paying full price is for suckers. She's also written for money-saving sites like DealNews and LivingSocial. December 31, 2014 1:51 pm

Phone cases and chargers you can buy on http://casezz.com/phone-chargers.html
If you want to save the phone battery on HTC one m8, just turn of app sync on background. I did and it works and battery lasts much longer.